Easiest? Of course, you said 'decent' hash lol so I guess my method is out....

Save trim in paper bag until full
Crush and stuff in mason jar
Cover with isopropanol 70% for 24h
Strain off into GLASS saucepan
Rinse remaining plant material down with isopropanol
Strain rinse in with the rest
Place saucepan over another one full of water
Gently heat and allow to evaporate to dryness
Scrape up green glop and put in an airtight container
Allow to 'rest' about 2 weeks to mellow a bit (drawback of iso hash is that it extracts chlorophyll too, lol... of course, if your trim is wicked old and dry this is less of a problem).
Enjoy, or give to your broke-ass loser friends who can't afford the good shit.